WO2008038928A1 - Procédé de formation d'une structure à base de microcapsules - Google Patents

Procédé de formation d'une structure à base de microcapsules Download PDF

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Publication number
WO2008038928A1
WO2008038928A1 PCT/KR2007/004517 KR2007004517W WO2008038928A1 WO 2008038928 A1 WO2008038928 A1 WO 2008038928A1 KR 2007004517 W KR2007004517 W KR 2007004517W WO 2008038928 A1 WO2008038928 A1 WO 2008038928A1
Authority
WO
WIPO (PCT)
Prior art keywords
microcapsule
microcapsules
water
patterning
substrate
Prior art date
Application number
PCT/KR2007/004517
Other languages
English (en)
Inventor
Chul Am Kim
Seung Youl Kang
Hey Jin Myoung
Kyung Soo Suh
Seong Deok Ahn
Gi Heon Kim
In Kyu You
Ji Young Oh
Original Assignee
Electronics And Telecommunications Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electronics And Telecommunications Research Institute filed Critical Electronics And Telecommunications Research Institute
Priority to JP2009530256A priority Critical patent/JP2010504565A/ja
Priority to US12/377,563 priority patent/US8049953B2/en
Priority to EP07808307A priority patent/EP2069861A4/fr
Publication of WO2008038928A1 publication Critical patent/WO2008038928A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/16757—Microcapsules
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1679—Gaskets; Spacers; Sealing of cells; Filling or closing of cells

Definitions

  • the present invention relates to a microcapsule patterning method, and more specifically, to a microcapsule patterning method in which color microcapsules that can be applied to an electrophoretic display are prepared and used for implementing color e-paper.
  • microcapsules have been developed in the USA. There is no standard for the size of microcapsules, and the microcapsules are manufactured by injecting liquid, solid or gas molecules into minute capsules (cells) and then sealing the capsules. Depending on manufacturing methods, the microcapsules may have a diameter of several nm to mm. Further, the microcapsules can be applied to various fields, such as medicine, food, energy, agriculture and so on.
  • microcapsules have also been applied to flat panel displays.
  • a microcapsule-type electrophoretic display is considered to be a leading technical field for implementing e-paper.
  • the microcapsule-type electrophoretic display several million white and black particles are injected into a microcapsule having a size corresponding to the diameter of a human hair, and microcapsules having the white-and-black particle suspensions injected therein are injected between a transparent electrode and a driving electrode.
  • a method used for the development of color e-paper is where a color filter is adopted and attached to a display unit of the black-and-white e-paper so as to implement color e-paper through the same method as an LCD display. It is known that the method is being attempted by E- Ink, Inc. Further, a method of directly patterning microcapsules is being attempted. In this method, hydrophile treatment and hydrophobic treatment are performed on an electrode surface by using a hydrophilic binder surrounding microcapsules such that the microcapsules crowd to the hydrophilic surface. Attempts to form desired capsule patterns are being made. Meanwhile, methods of directly depositing microcapsules onto an electrode through electro deposition are also being attempted.
  • binary-system materials such as microcapsules are applied in a bulk state, without attempting to form patterns in a predetermined shape. This is because inner materials should be protected or the discharge of the inner materials with functionality should be adjusted.
  • pixels are desired to be represented by capsules as in a display, respective color pixels should be arranged.
  • the microcapsules may be directly patterned and implemented as pixels.
  • a color filter may then be attached. When the color filter is attached to the microcapsule layer, the electrophoretic microcapsule-type e-paper is a reflective display which does not have a backlight, unlike an LCD display.
  • the invention is directed to a microcapsule patterning method for patterning electrophoretic microcapsules on a substrate, the method including the steps of: preparing a microcapsule slurry in which microcapsules and a water-soluble binder are mixed; putting the microcapsule slurry into a liquid dispensor having injection and ejection ports formed therein; and applying the microcapsule slurry contained in the liquid dispensor onto the substrate so as to pattern pixels using the microcapsules.
  • the weight percentage of the water-soluble binder mixed in the microcapsule slurry with respect to the microcapsules may range from 5 to 20wt%.
  • the water-soluble binder may include at least one of water-soluble urethane, water-soluble acrylic resin, water soluble Ethylene- Vinyl Acetate copolymer (EVA), acrylic resin, and polyvinyl alcohol.
  • the microcapsules may be patterned in the form of a line with a predetermined width. Further, the microcapsules patterned in the form of a line may have a width of 100 to 500 ⁇ m.
  • the microcapsule slurry is prepared, and the microcapsules are patterned by the liquid dispensor such that specific patterns are formed without physical and chemical damage to the microcapsules. Therefore, the patterns can be used as pixels of e-paper which is a kind of flat panel display. Further, through the patterning it is possible to implement a color display device which does not exhibit performance degradation.
  • FIG. IA is a schematic view showing a state where microcapsules are dropped using a microcapsule slurry prepared according to the present invention
  • FIG. IB is a flow chart showing a microcapsule patterning process.
  • FIG. 2 is a photograph showing microcapsule lines patterned according to the present invention.
  • FIGS. 3A and 3B are photographs showing results in which an electrophoretic characteristic is measured after a transparent electrode substrate is covered with microcapsule patterns manufactured according to the present invention.
  • FIG. IA is a schematic view showing a state where microcapsules are dropped using a microcapsule slurry prepared according to the present invention
  • FIG. IB is a flow chart showing a microcapsule patterning process.
  • FIG. 2 is a photograph showing microcapsule lines patterned according to the present invention.
  • a microcapsule slurry 25 is prepared so as to pattern microcapsules on a substrate 10 (step SlOO).
  • microcapsules 40 for elec- trophoretic display are prepared, which are used for the microcapsule slurry 25.
  • the prepared microcapsules 40 are binary-system materials including liquid and solid particles (for example, color or black-and-white particles) and are protected by protective layers (for example, polymer layers with a thickness of 0.1-0.3 ⁇ m) which surround the particles.
  • the microcapsules 40 are dehydrated and are then mixed with a water-soluble binder 30, thereby preparing the microcapsule slurry 25.
  • the microcapsule slurry 25 is the most effective when 5-20wt% water-soluble binder with respect to the microcapsules 40 is added. Therefore, the weight percentage of the water-soluble binder 30 is properly selected from the range of 5 to 20wt%.
  • the water-soluble binder 30 at least one of water-soluble urethane, water-soluble acrylic resin, water-soluble Ethylene- Vinyl Acetate copolymer (EVA), acrylic resin, and polyvinyl alcohol can be used.
  • EVA water-soluble Ethylene- Vinyl Acetate copolymer
  • acrylic resin acrylic resin
  • polyvinyl alcohol polyvinyl alcohol
  • the viscosity of the water-soluble binder 30 a degree of hydrophile property, hardening temperature, time and so on should be adjusted.
  • the viscosity of the water-soluble binder 30 has an effect upon the pressure of a liquid ejector 20, the inner diameter of a nozzle and so on.
  • the degree of hydrophile property of the water-soluble binder 30 is proper when less than 7wt% of an organic solvent is contained in the binder. In this case, application is easily performed on a conductive substrate.
  • a urethane binder made by Neoresin, Inc., R-961
  • 10wt% of a urethane binder which serves as the water-soluble binder 30, with respect to the microcapsules is uniformly mixed, thereby preparing the microcapsule slurry 25.
  • 10wt% of a urethane binder (made by Neoresin, Inc., R-966), which serves as the water-soluble binder 30, and 10wt% polyvinyl alcohol (10%) with respect to the microcapsules 40 are uniformly mixed, thereby preparing the microcapsule slurry 25.
  • the microcapsule slurry 25 prepared using the water-soluble binder 30 and the microcapsules 40 is put into the liquid dispensor 20.
  • the liquid dispensor 20 formed in a funnel shape has an injection port 21 formed in an upper portion thereof and a nozzle of an ejection port 22 formed in a lower portion thereof.
  • the microcapsule slurry 25 is injected through the injection port 21 and is ejected from the nozzle of an ejection port 22.
  • the microcapsule slurry 25 is ejected onto a transparent electrode substrate 10 so as to be patterned (step S 120).
  • the substrate 10 may be formed of a glass substrate or a plastic substrate which has conductivity and transparency.
  • the microcapsule slurry 25 is ejected onto the substrate 10 by the liquid dispensor 20 such that the microcapsules are repeatedly patterned at predetermined intervals in the form of a line.
  • the line width A of patterns is set in the range of 100 to 500 ⁇ m. Therefore, the line width A can be properly selected from the range of 100 to 500 ⁇ m by adjusting the nozzle of the liquid dispensor 20, in accordance with a width desired by a user.
  • a preferable line width ranges from 100 to 300 ⁇ m.
  • a distance between the respective patterns is set to be equal to or two or three times larger than the width of the applied pattern such that different colors of capsules can be applied between the patterns.
  • the color microcapsules are prepared and patterned, and can be applied to an electrophoretic display and can be used in pixels which are essentially required when color e-paper is implemented.
  • the microcapsules are patterned by the liquid dispensor, specific patterns can be formed while the patterned microcapsule lines are not damaged physically and chemically.
  • FIGS. 3A and 3B are photographs showing results in which an electrophoretic characteristic is measured after the transparent electrode substrate is covered with the microcapsule patterns manufactured according to the present invention.
  • FIG. 3A shows a case where a positive voltage is applied onto the substrate 10 having the microcapsule lines patterned thereon. In this case, colorful particles (for example, red particles) move toward a visual field.
  • FIG. 3A shows a case where a negative voltage is applied onto the substrate 10 having the microcapsule lines patterned thereon. In this case, white particles move toward a visual field such that the surfaces of the capsules look white.
  • FIGS. 3A and 3B are photographs showing cases where voltages of + 10V and -10V are respectively applied. As such, although a predetermined voltage is applied onto the substrate 10 after the microcapsule line patterns are formed by the microcapsule line patterning technique using the liquid ejector 20, the microcapsules are not damaged at all.
  • the first exemplary embodiment in which 10wt% of a urethane binder (made by Neoresin, Inc., R-961) serving as the water-soluble binder with respect to the microcapsules is uniformly mixed
  • the second exemplary embodiment in which 10wt% of a urethane binder (made by Neoresin, Inc., R-966) serving as the water-soluble binder and 10wt% polyvinyl alcohol (10%) with respect to the microcapsules are uniformly mixed

Abstract

La présente invention concerne un procédé de formation d'une structure à base de microcapsules permettant de former une structure avec des microcapsules électrophorétiques sur un substrat, lequel procédé comprend les étapes consistant: à préparer une suspension de microcapsules dans laquelle des microcapsules et un liant hydrosoluble sont mélangés; à placer la suspension de microcapsules dans un éjecteur de liquide pourvu d'orifices d'injection et d'éjection; et à appliquer la suspension de microcapsules contenue dans l'éjecteur de liquide sur le substrat de façon à former une structure de pixels au moyen des microcapsules. Ainsi, des structures spécifiques sont formées sans dommages physiques ou chimiques pour les microcapsules. De ce fait, les structures peuvent être utilisées comme pixels d'écrans plats. En outre, cette structuration permet d'obtenir un dispositif d'affichage couleur qui ne présente pas de dégradation de performances.
PCT/KR2007/004517 2006-09-27 2007-09-18 Procédé de formation d'une structure à base de microcapsules WO2008038928A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009530256A JP2010504565A (ja) 2006-09-27 2007-09-18 マイクロカプセルパターニング方法
US12/377,563 US8049953B2 (en) 2006-09-27 2007-09-18 Microcapsule patterning method
EP07808307A EP2069861A4 (fr) 2006-09-27 2007-09-18 Procédé de formation d'une structure à base de microcapsules

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060094249A KR100795103B1 (ko) 2006-09-27 2006-09-27 마이크로 캡슐 패터닝 방법
KR10-2006-0094249 2006-09-27

Publications (1)

Publication Number Publication Date
WO2008038928A1 true WO2008038928A1 (fr) 2008-04-03

Family

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Application Number Title Priority Date Filing Date
PCT/KR2007/004517 WO2008038928A1 (fr) 2006-09-27 2007-09-18 Procédé de formation d'une structure à base de microcapsules

Country Status (5)

Country Link
US (1) US8049953B2 (fr)
EP (1) EP2069861A4 (fr)
JP (1) JP2010504565A (fr)
KR (1) KR100795103B1 (fr)
WO (1) WO2008038928A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130067616A (ko) * 2011-12-14 2013-06-25 한국전자통신연구원 마이크로 캡슐의 컬러 패터닝 방법
KR102013217B1 (ko) * 2019-06-11 2019-08-22 코리아휠 주식회사 버섯재배용 원목홀더조립체

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000035769A (ja) * 1998-07-17 2000-02-02 Nok Corp 表示パネルの製造方法
KR100555197B1 (ko) * 2002-08-22 2006-03-03 세이코 엡슨 가부시키가이샤 전기영동 장치 및 전자 기기
KR20060046234A (ko) * 2004-06-02 2006-05-17 세이코 엡슨 가부시키가이샤 전기영동 표시용 시트의 제조 방법, 전기영동 표시용 시트및 그 용도

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6120588A (en) 1996-07-19 2000-09-19 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US6839158B2 (en) * 1997-08-28 2005-01-04 E Ink Corporation Encapsulated electrophoretic displays having a monolayer of capsules and materials and methods for making the same
EP1118038A1 (fr) 1998-10-07 2001-07-25 E Ink Corporation Affichages par electrophorese encapsules pourvus d'une monocouche de capsules
JP4582914B2 (ja) 1999-04-06 2010-11-17 イー インク コーポレイション カプセルベースの起電ディスプレイにおける使用のための液滴を作製するための方法
JP4865172B2 (ja) * 2000-10-11 2012-02-01 キヤノン株式会社 表示装置およびその製造方法
KR100482472B1 (ko) * 2002-02-20 2005-04-14 비오이 하이디스 테크놀로지 주식회사 전기영동 디스플레이 장치 및 그 제조방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000035769A (ja) * 1998-07-17 2000-02-02 Nok Corp 表示パネルの製造方法
KR100555197B1 (ko) * 2002-08-22 2006-03-03 세이코 엡슨 가부시키가이샤 전기영동 장치 및 전자 기기
KR20060046234A (ko) * 2004-06-02 2006-05-17 세이코 엡슨 가부시키가이샤 전기영동 표시용 시트의 제조 방법, 전기영동 표시용 시트및 그 용도

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2069861A4 *

Also Published As

Publication number Publication date
US8049953B2 (en) 2011-11-01
EP2069861A4 (fr) 2010-06-09
KR100795103B1 (ko) 2008-01-17
JP2010504565A (ja) 2010-02-12
US20100225994A1 (en) 2010-09-09
EP2069861A1 (fr) 2009-06-17

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